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1.发明申请公开(公告)号：US20180290128A1
公开(公告)日：2018-10-11
申请号：US15765225
申请日：2016-09-30
Applicant: CLEAN DIESEL TECHNOLOGIES, INC.
Inventor： Zahra Nazarpoor , Stephen J. Golden
Abstract: Zero-PGM (ZPGM) catalyst materials including pseudo-brookite compositions for use in diesel oxidation catalyst (DOC) applications are disclosed. The disclosed doped pseudo-brookite compositions include A-site partially doped pseudo-brookite compositions, such as, Sr-doped and Ce-doped pseudo-brookite compositions, as well as B-site partially doped pseudo-brookite compositions, such as, Fe-doped, Co-doped Ni-doped, and Ti-doped pseudo-brookite compositions. The disclosed doped pseudo-brookite compositions, including calcination at various temperatures, are subjected to a DOC standard light-off (LO) test methodology to assess/verify catalyst activity as well as to determine the effect of the use of a dopant in an A-site cation or a B-site cation within a pseudo-brookite composition. The disclosed doped pseudo-brookite compositions exhibit higher NO oxidation catalyst activities when compared to bulk powder pseudo-brookite, thereby indicating improved thermal stability and catalyst activity when using a dopant in an A-site cation or in a B-site cation within a pseudo-brookite composition.
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公开(公告)号：US20170326533A1
公开(公告)日：2017-11-16
申请号：US15499087
申请日：2017-04-27
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Stephen J. Golden
IPC: B01J23/889 , B01J37/02 , B01J37/08 , C01G49/00 , B01D53/94 , B01J23/00 , F01N3/10 , B01J21/04 , B01J21/06 , B01J35/00 , B01J23/75 , C01G51/00
CPC classification number: B01J23/8892 , B01D53/945 , B01D2255/20715 , B01D2255/2073 , B01D2255/20738 , B01D2255/20746 , B01D2255/20761 , B01D2255/2092 , B01D2255/405 , B01D2255/65 , B01D2255/9025 , B01D2255/9027 , B01D2255/908 , B01J21/04 , B01J21/066 , B01J23/005 , B01J23/10 , B01J23/685 , B01J23/688 , B01J23/75 , B01J23/78 , B01J23/825 , B01J23/83 , B01J23/8474 , B01J23/85 , B01J23/8906 , B01J23/8913 , B01J23/892 , B01J35/0006 , B01J37/0242 , B01J37/0244 , B01J37/038 , B01J2523/00 , C01G49/0072 , C01G51/40 , C01P2002/32 , F01N3/101 , F01N2370/02 , F01N2510/0684 , Y02T10/22 , B01J2523/31 , B01J2523/48 , B01J2523/842 , B01J2523/845 , B01J2523/72
Abstract: Zero-Rare Earth Metal (ZREM) and Zero-platinum group metals (ZPGM) compositions of varied binary spinel oxides are disclosed as oxygen storage material (OSM) to be used within TWC systems. The ZREM-ZPGM OSM systems comprise binary non-Cu spinel oxides of Co—Fe, Fe—Mn, Co—Mn, or Mn—Fe. The oxygen storage capacity (OSC) property associated with the non-Cu ZREM-ZPGM OSM systems is determined employing isothermal OSC oscillating condition testing. Further, the OSC test results compare the OSC properties of a ZREM-ZPGM reference OSM system including a Cu—Mn binary spinel oxide and PGM reference catalysts including Ce-based OSMs. The non-Cu spinel oxides ZREM-ZPGM OSM systems exhibit significantly improved OSC properties, which are greater than the OSC property of the Ce-based OSM PGM reference systems.
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公开(公告)号：US09604175B2
公开(公告)日：2017-03-28
申请号：US14732499
申请日：2015-06-05
Applicant: Clean Diesel Technologies, Inc.
Inventor： Randal L. Hatfield , Zahra Nazarpoor , Johnny T. Ngo , Edward J. Lee , Stephen J. Golden
IPC: B01D50/00 , B01D53/94 , B01J23/00 , B01J23/89 , B01J35/04 , B01J21/04 , B01J23/10 , B01J23/20 , B01J23/63 , B01J27/232 , B01J35/00
CPC classification number: B01D53/9472 , B01D53/945 , B01D53/9454 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/2061 , B01D2255/2063 , B01D2255/2065 , B01D2255/2066 , B01D2255/2068 , B01D2255/207 , B01D2255/20715 , B01D2255/20738 , B01D2255/209 , B01D2255/2092 , B01D2255/40 , B01D2255/902 , B01D2255/908 , B01J21/04 , B01J23/002 , B01J23/10 , B01J23/20 , B01J23/63 , B01J23/83 , B01J23/8906 , B01J23/894 , B01J27/232 , B01J35/0006 , B01J35/04 , B01J37/0244 , B01J2523/00 , Y02A50/2324 , Y02T10/22
Abstract: The present disclosure describes zoned three way catalyst (TWC) systems including Rhodium-iron overcoat layers and Nb—Zr—Al Oxide overcoat layers. Disclosed herein are TWC sample systems that are configured to include a substrate and one or more of a washcoat layer, an impregnation layer, and/or an overcoat layer. In catalyst systems disclosed herein, closed-coupled catalysts include a first catalyst zone with an overcoat layer formed using a slurry that includes an oxide mixture and an Oxygen Storage Material (OSM). In catalyst systems disclosed herein, oxide mixtures include niobium oxide (Nb2O5), zirconia, and alumina. Further, catalyst systems disclosed herein include a second catalyst zone with an overcoat layer formed to include a rhodium-iron catalyst. Yet further, catalyst systems disclosed herein include impregnation layers that include one or more of Palladium, Barium, Cerium, Neodymium, and Rhodium.
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4.发明授权Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate 有权金属基底上的零PGM修补基面涂层和外涂层负载的优化公开(公告)号：US09545626B2
公开(公告)日：2017-01-17
申请号：US13941015
申请日：2013-07-12
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Sen Kitazumi , Johnny T. Ngo
CPC classification number: B01J37/0244 , B01D53/944 , B01D2255/104 , B01D2255/2065 , B01D2255/20707 , B01D2255/20715 , B01D2255/20761 , B01D2255/65 , B01D2255/9022 , B01D2255/908 , B01J23/50 , B01J23/72 , B01J23/83
Abstract: The present disclosure refers to a plurality of process employed for optimization of Zero-PGM washcoat and overcoat loadings on metallic substrates. According to an embodiment a substantial increase in conversion of HC and CO may be achieved by optimizing the total washcoat and overcoat loadings of the catalyst. According to another embodiment, the present disclosure may provide solutions to determine the optimum total washcoat and overcoat loadings for minimizing washcoat adhesion loss. As a result, may increase the conversion of HC and CO from discharge of exhaust gases from internal combustion engines, optimizing performance of Zero-PGM catalyst systems.
Abstract translation: 本公开涉及用于在金属基材上优化零PGM修补基面涂层和外涂层负载的多种方法。 根据一个实施方案，可以通过优化催化剂的总修补基面涂层和外涂层负载量来实现HC和CO的转化率的显着增加。 根据另一个实施方案，本公开可提供用于确定用于最小化洗涂层粘附损失的最佳总修补基面涂层和外涂层负载量的解决方案。 因此，可能会增加HC和CO从内燃机废气排放中的转化，从而优化Zero-PGM催化剂体系的性能。
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5.发明授权Zero PGM catalyst including Cu—Co—Mn ternary spinel for TWC applications 有权零PGM催化剂包括用于TWC应用的Cu-Co-Mn三元尖晶石公开(公告)号：US09468912B2
公开(公告)日：2016-10-18
申请号：US14543448
申请日：2014-11-17
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Oguzhan Selim Yaglidere , Stephen J. Golden
IPC: B01J23/889 , B01J23/10 , B01J23/00 , B01D53/94
CPC classification number: B01J23/8892 , B01D53/945 , B01D2255/2066 , B01D2255/207 , B01D2255/20715 , B01D2255/2073 , B01D2255/20746 , B01D2255/20761 , B01D2255/40 , B01D2255/405 , B01D2255/908 , B01J23/005 , B01J23/10 , B01J37/035 , B01J2523/00 , Y02T10/22 , B01J2523/17 , B01J2523/72 , B01J2523/845 , B01J2523/3718 , B01J2523/48 , B01J2523/56
Abstract: Variations of ZPGM bulk powder catalyst materials, including Cu—Co—Mn ternary spinel systems for TWC applications are disclosed. Bulk powder catalyst samples are prepared employing a plurality of molar ratio variations, including disclosed Cu—Co—Mn spinel on Praseodymium-Zirconia support oxide made by incipient wetness method, or Cu—Co—Mn spinel on Niobium-Zirconia support oxide, which may be synthesized by co-precipitation method. A plurality of bulk powder catalyst samples may be tested by performing isothermal steady state sweep test, employing a flow reactor at inlet temperature of about 450° C., and testing a gas stream from lean to rich condition and influence on TWC performance measured/analyzed, which may lead into significant improvements in the manufacturing of ZPGM bulk powder catalyst materials for TWC applications.
Abstract translation: 公开了ZPGM散装粉末催化剂材料的变化，包括用于TWC应用的Cu-Co-Mn三元尖晶石系统。 使用多个摩尔比变化制备散装粉末催化剂样品，包括在初始润湿方法制备的镨 - 氧化锆载体氧化物上公开的Cu-Co-Mn尖晶石或在铌 - 氧化锆载体氧化物上的Cu-Co-Mn尖晶石， 通过共沉淀法合成。 可以通过进行等温稳态扫描试验来测试多个散装粉末催化剂样品，使用流入反应器，入口温度为约450℃，并测试从贫到富状态的气流，并测量/分析对TWC性能的影响 ，这可能导致用于TWC应用的ZPGM散装粉末催化剂材料的制造的显着改进。
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Patent Agency Ranking
公开(公告)号：US10533472B2
公开(公告)日：2020-01-14
申请号：US15586847
申请日：2017-05-04
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Stephen J. Golden , Maxime Launois
Abstract: Synergized platinum group metals (SPGM) with ultra-low PGM loadings employed as close-coupled (CC) three-way catalysts (TWC) systems with varied material compositions and configurations are disclosed. SPGM CC catalysts in which ZPGM compositions of binary or ternary spinel structures supported onto support oxides are coupled with commercialized PGM UF catalysts and tested under Federal Test Procedure FTP-75 within TGDI and PI engines. The performance of the TWC systems including SPGM CC (with ultra-low PGM loadings) catalyst and commercialized PGM UF catalyst is compared to the performance of commercialized PGM CC and PGM UF catalysts. The disclosed TWC systems indicate that SPGM CC TWC catalytic performance is comparable or even exceeds high PGM-based conventional TWC catalysts, with reduced tailpipe emissions.
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公开(公告)号：US09951706B2
公开(公告)日：2018-04-24
申请号：US14692577
申请日：2015-04-21
Applicant: Clean Diesel Technologies, Inc.
Inventor： Maxime Launois , Zahra Nazarpoor , Stephen J. Golden
CPC classification number: F02D41/2432 , F01N3/28 , F01N2510/0684 , F02D41/08 , F02D41/1441 , F02D41/1446 , F02D41/1456 , F02D41/1475 , F02D41/2461 , F02D2250/36 , G01M15/104
Abstract: Modified calibration strategies for controlling an internal combustion engine and monitoring catalyst performance are disclosed. The modified calibration strategies are implemented using an engine and test cell/catalyst chamber setup wherein the engine is a Euro V 1.2 L turbo gasoline direct injection engine and test cells/catalyst chamber are implemented as substantially free of platinum group metals (PGM) catalysts, herein referred as ZPGM catalysts, and synergized PGM (SPGM) catalysts including a stoichiometric spinel structure within the catalyst configuration. The utilization of an open ECU enables the modified calibration of the engine out targeted AFR. The conventional ECU AFR control strategies are not modified to have the ECU AFR control strategies to continue running normally and only the final engine out targeted AFR values are modified by applying offset AFR values. The modified calibration strategies improve engine operation and catalyst conversion efficiency of the ZPGM and SPGM catalysts including the spinel structures.
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公开(公告)号：US09861964B1
公开(公告)日：2018-01-09
申请号：US15377368
申请日：2016-12-13
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Stephen J. Golden
IPC: B01J21/00 , B01J21/04 , B01J21/06 , B01J21/08 , B01J23/00 , B01J23/72 , B01J23/755 , B01J23/889 , B01J35/00 , B01J35/02 , B01J35/04 , B01J23/20 , B01J37/02 , B01J37/08 , B01D53/94
CPC classification number: B01J23/8892 , B01D53/945 , B01D2255/20715 , B01D2255/2073 , B01D2255/20753 , B01D2255/20761 , B01D2255/2092 , B01D2255/9022 , B01J23/005 , B01J23/20 , B01J35/0006 , B01J35/02 , B01J37/0213 , B01J37/0242 , B01J37/08
Abstract: The present disclosure relates to zero-PGM (ZPGM) catalysts including variations of Nickel-doped Copper-Manganese spinel for improved catalyst performance at the stoichiometric condition for use within three-way catalyst (TWC) applications. The ZPGM catalyst material compositions within the aforementioned ZPGM catalysts are expressed with general formulas of Cu1-XNiXMn2O4 (A-site substitution) and Cu1Mn2-XNiXO4 (B-site substitution). The ZPGM catalysts are subjected to a TWC isothermal steady-state sweep test to assess the catalytic performance (e.g., NO conversion). Test results indicate the ZPGM catalysts exhibit higher NO conversions, at stoichiometric condition and lean conditions, when Ni substituted the B-site cation of the Cu—Mn spinel as compared to Ni substituted the A-site cation of the Cu—Mn spinel. Additionally, NO conversions of the ZPGM catalysts are significantly affected, at the stoichiometric condition, by the molar ratio of the Ni dopant within the A or B-site cation of the Cu—Mn spinel.
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9.发明申请公开(公告)号：US20170328249A1
公开(公告)日：2017-11-16
申请号：US15586823
申请日：2017-05-04
Applicant: Clean Diesel Technologies, Inc.
Inventor： Zahra Nazarpoor , Stephen J. Golden , Maxime Launois
CPC classification number: F01N3/101 , B01D53/9445 , B01D53/9468 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/1026 , B01D2255/1028 , B01D2255/2073 , B01D2255/20761 , B01D2255/405 , B01D2255/9022 , B01D2255/904 , B01D2258/01 , B01J23/005 , B01J23/8892 , B01J23/8986 , B01J35/0006 , B01J37/0244 , B01J2523/00 , F01N13/009 , F01N2370/02 , F01N2510/068 , Y02T10/22 , B01J2523/17 , B01J2523/31 , B01J2523/48 , B01J2523/72 , B01J2523/822 , B01J2523/828 , B01J2523/845
Abstract: Synergized platinum group metals (SPGM) with ultra-low PGM loadings employed as underfloor (UF) three-way catalyst (TWC) systems with varied material compositions and configurations are disclosed. SPGM UF catalysts in which ZPGM compositions of binary and ternary spinel structures supported onto support oxides are coupled with commercialized PGM close-coupled (CC) catalysts and tested under Federal Test Procedure FTP-75 within TGDI and PI engines. The performance of the TWC systems including commercialized PGM CC and SPGM UF (with ultra-low PGM loadings) catalysts is compared to the performance of commercialized PGM CC and PGM UF catalysts. The disclosed TWC systems indicate that SPGM UF TWC catalytic performance is comparable or even exceeds high PGM-based conventional TWC catalysts, with reduced tailpipe emissions.
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10.发明授权公开(公告)号：US09511355B2
公开(公告)日：2016-12-06
申请号：US14090861
申请日：2013-11-26
Applicant: CLEAN DIESEL TECHNOLOGIES, INC.
Inventor： Zahra Nazarpoor , Stephen J. Golden
CPC classification number: B01J23/8986 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/20715 , B01D2255/2073 , B01D2255/20761 , B01D2255/405 , B01D2255/9022 , B01D2255/908 , B01D2258/012 , B01J23/005 , B01J23/8892 , B01J37/0244 , B01J37/035 , B01J37/038 , B01J2523/00 , Y02T10/22 , B01J2523/17 , B01J2523/48 , B01J2523/56 , B01J2523/72 , B01J2523/31 , B01J2523/824
Abstract: Synergies resulting from combinations of catalyst systems including Copper-Manganese material compositions and PGM catalysts are disclosed. Variations of catalyst system configurations are tested to determine most effective material composition, formulation, and configuration for an optimal synergized PGM (SPGM) catalyst system. The synergistic effect of the selected SPGM catalyst system is determined under steady state and oscillating test conditions, from which the optimal NO/CO cross over R-value indicates enhanced catalytic behavior of the selected SPGM catalyst system as compared with current PGM catalysts for TWC applications. According to principles in the present disclosure, application of Pd on alumina-based support as overcoat and Cu—Mn spinel structure supported on Nb2O5—ZrO2 as washcoat on suitable ceramic substrate, produce higher catalytic activity, efficiency, and better performance in TWC condition, especially under lean condition, than commercial PGM catalysts.
Abstract translation: 公开了由包括铜 - 锰材料组合物和PGM催化剂的催化剂体系的组合产生的协同作用。 测试催化剂体系配置的变化，以确定最佳协同PGM（SPGM）催化剂体系的最有效的材料组成，配方和配置。 所选择的SPGM催化剂体系的协同效应是在稳定状态和振荡试验条件下测定的，与当前用于TWC应用的PGM催化剂相比，最优NO / CO交叉R值表明所选SPGM催化剂体系的催化行为增强 。 根据本公开的原理，在合适的陶瓷衬底上，作为外涂层和负载在Nb 2 O 5 -ZrO 2上的Cu-Mn尖晶石结构的氧化铝基载体上施加Pd作为修补基面涂层，在TWC条件下产生更高的催化活性，效率和更好的性能， 特别是在贫血条件下，比商业PGM催化剂。
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